// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_WM_CORE_ACCELERATOR_FILTER_H_
#define UI_WM_CORE_ACCELERATOR_FILTER_H_

#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "ui/events/event_handler.h"
#include "ui/wm/wm_export.h"

namespace ui {
class Accelerator;
class AcceleratorHistory;
}

namespace wm {
class AcceleratorDelegate;

// AcceleratorFilter filters key events for AcceleratorControler handling global
// keyboard accelerators.
class WM_EXPORT AcceleratorFilter : public ui::EventHandler {
public:
    // AcceleratorFilter doesn't own |accelerator_history|, it's owned by
    // AcceleratorController.
    AcceleratorFilter(scoped_ptr<AcceleratorDelegate> delegate,
        ui::AcceleratorHistory* accelerator_history);
    ~AcceleratorFilter() override;

    // Overridden from ui::EventHandler:
    void OnKeyEvent(ui::KeyEvent* event) override;

private:
    scoped_ptr<AcceleratorDelegate> delegate_;
    ui::AcceleratorHistory* accelerator_history_;

    DISALLOW_COPY_AND_ASSIGN(AcceleratorFilter);
};

} // namespace wm

#endif // UI_WM_CORE_ACCELERATOR_FILTER_H_
